1*38c8a9a5SSteve French /* SPDX-License-Identifier: LGPL-2.1 */ 2*38c8a9a5SSteve French /* 3*38c8a9a5SSteve French * 4*38c8a9a5SSteve French * Protocol Data Unit definitions for RFC 1001/1002 support 5*38c8a9a5SSteve French * 6*38c8a9a5SSteve French * Copyright (c) International Business Machines Corp., 2004 7*38c8a9a5SSteve French * Author(s): Steve French (sfrench@us.ibm.com) 8*38c8a9a5SSteve French * 9*38c8a9a5SSteve French */ 10*38c8a9a5SSteve French 11*38c8a9a5SSteve French /* NB: unlike smb/cifs packets, the RFC1002 structures are big endian */ 12*38c8a9a5SSteve French 13*38c8a9a5SSteve French /* RFC 1002 session packet types */ 14*38c8a9a5SSteve French #define RFC1002_SESSION_MESSAGE 0x00 15*38c8a9a5SSteve French #define RFC1002_SESSION_REQUEST 0x81 16*38c8a9a5SSteve French #define RFC1002_POSITIVE_SESSION_RESPONSE 0x82 17*38c8a9a5SSteve French #define RFC1002_NEGATIVE_SESSION_RESPONSE 0x83 18*38c8a9a5SSteve French #define RFC1002_RETARGET_SESSION_RESPONSE 0x84 19*38c8a9a5SSteve French #define RFC1002_SESSION_KEEP_ALIVE 0x85 20*38c8a9a5SSteve French 21*38c8a9a5SSteve French /* RFC 1002 flags (only one defined */ 22*38c8a9a5SSteve French #define RFC1002_LENGTH_EXTEND 0x80 /* high order bit of length (ie +64K) */ 23*38c8a9a5SSteve French 24*38c8a9a5SSteve French struct rfc1002_session_packet { 25*38c8a9a5SSteve French __u8 type; 26*38c8a9a5SSteve French __u8 flags; 27*38c8a9a5SSteve French __u16 length; 28*38c8a9a5SSteve French union { 29*38c8a9a5SSteve French struct { 30*38c8a9a5SSteve French __u8 called_len; 31*38c8a9a5SSteve French __u8 called_name[32]; 32*38c8a9a5SSteve French __u8 scope1; /* null */ 33*38c8a9a5SSteve French __u8 calling_len; 34*38c8a9a5SSteve French __u8 calling_name[32]; 35*38c8a9a5SSteve French __u8 scope2; /* null */ 36*38c8a9a5SSteve French } __attribute__((packed)) session_req; 37*38c8a9a5SSteve French struct { 38*38c8a9a5SSteve French __u32 retarget_ip_addr; 39*38c8a9a5SSteve French __u16 port; 40*38c8a9a5SSteve French } __attribute__((packed)) retarget_resp; 41*38c8a9a5SSteve French __u8 neg_ses_resp_error_code; 42*38c8a9a5SSteve French /* POSITIVE_SESSION_RESPONSE packet does not include trailer. 43*38c8a9a5SSteve French SESSION_KEEP_ALIVE packet also does not include a trailer. 44*38c8a9a5SSteve French Trailer for the SESSION_MESSAGE packet is SMB/CIFS header */ 45*38c8a9a5SSteve French } __attribute__((packed)) trailer; 46*38c8a9a5SSteve French } __attribute__((packed)); 47*38c8a9a5SSteve French 48*38c8a9a5SSteve French /* Negative Session Response error codes */ 49*38c8a9a5SSteve French #define RFC1002_NOT_LISTENING_CALLED 0x80 /* not listening on called name */ 50*38c8a9a5SSteve French #define RFC1002_NOT_LISTENING_CALLING 0x81 /* not listening on calling name */ 51*38c8a9a5SSteve French #define RFC1002_NOT_PRESENT 0x82 /* called name not present */ 52*38c8a9a5SSteve French #define RFC1002_INSUFFICIENT_RESOURCE 0x83 53*38c8a9a5SSteve French #define RFC1002_UNSPECIFIED_ERROR 0x8F 54*38c8a9a5SSteve French 55*38c8a9a5SSteve French /* RFC 1002 Datagram service packets are not defined here as they 56*38c8a9a5SSteve French are not needed for the network filesystem client unless we plan on 57*38c8a9a5SSteve French implementing broadcast resolution of the server ip address (from 58*38c8a9a5SSteve French server netbios name). Currently server names are resolved only via DNS 59*38c8a9a5SSteve French (tcp name) or ip address or an /etc/hosts equivalent mapping to ip address.*/ 60*38c8a9a5SSteve French 61*38c8a9a5SSteve French #define DEFAULT_CIFS_CALLED_NAME "*SMBSERVER " 62